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Anthropogenic Activities Dominate Vegetation Improvement in Arid Areas of China

文献类型： 外文期刊

作者： Guo, Yu 1 ; Wang, Xinwei 2 ; Cao, Hongying 1 ; Peng, Qin 1 ; Dong, Yunshe 1 ; Qi, Yunchun 1 ; Liu, Jian 2 ; Lv, Ning 3 ; Yin, Feihu 3 ; Yuan, Xiujin 1 ; Zeng, Mei 6 ;

作者机构： 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China

2.China Univ Petr, Coll Chem Engn & Environm, Beijing 102249, Peoples R China

3.Xinjiang Acad Agr & Reclamat Sci, Inst Farmland Water Conservancy & Soil Fertilizer, Shihezi 832000, Peoples R China

4.Minist Agr & Rural Affairs, Key Lab Northwest Oasis Water Saving Agr, Shihezi 832000, Peoples R China

5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China

6.Beijing Forestry Univ, Beijing 100083, Peoples R China

关键词： spatiotemporal variation in vegetation; land use change; land use intensity; climatic changes

期刊名称：REMOTE SENSING （ 影响因子：4.1； 五年影响因子：4.8 ）

ISSN：

年卷期： 2025 年 17 卷 15 期

页码：

收录情况： SCI

摘要： Arid regions, while providing essential ecosystem services, are among the most ecologically vulnerable worldwide. Understanding and monitoring their long-term vegetation dynamics is essential for accurate environmental assessment and climate adaptation strategies. This study examined the spatiotemporal variations and driving forces of the vegetation dynamics in arid Northwestern China during 2000 to 2020, using the annual peak fractional vegetation cover (FVC) as the primary indicator. The Sen's slope estimator with the Mann-Kendall test and the coefficient of variation were employed to assess the spatiotemporal variations in FVC, while the Pearson correlation, geographic detector model and random forest model were applied to identify the dominant driving factors for FVC. The results indicated that (1) overall vegetation cover was low (averaged peak FVC = 0.191), showing a spatial pattern of higher values in the northwest and lower values in the southeast; high FVC values were primarily observed in mountainous areas and river corridors; (2) the annual peak FVC increased significantly at a rate of 0.0508 yr-1, with 33.72% of the region showing significant improvements and 5.49% degradation; (3) the spatial pattern of FVC was shaped by the distribution of land use types (59.46%), while the temporal dynamics of FVC were driven by land use changes (16.37%) and the land use intensity (37.56%); (4) both the spatial pattern and the temporal dynamics were limited by the environmental conditions. These findings highlight the critical role of anthropogenic activities in shaping the spatiotemporal variations in FVC, particularly emphasizing the distinct contributions of changes in land use types and land use intensity. This study could provide a scientific basis for sustainable land management and restoration strategies in arid regions facing global changes.

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